GLDRAWTRANSFORMFEEDB(3G)        [FIXME: manual]       GLDRAWTRANSFORMFEEDB(3G)

NAME
       glDrawTransformFeedbackInstanced - render multiple instances of
       primitives using a count derived from a transform feedback object

C SPECIFICATION
       void glDrawTransformFeedbackInstanced(GLenum mode, GLuint id,
                                             GLsizei instancecount);

PARAMETERS
       mode
           Specifies what kind of primitives to render. Symbolic constants
           GL_POINTS, GL_LINE_STRIP, GL_LINE_LOOP, GL_LINES,
           GL_LINE_STRIP_ADJACENCY, GL_LINES_ADJACENCY, GL_TRIANGLE_STRIP,
           GL_TRIANGLE_FAN, GL_TRIANGLES, GL_TRIANGLE_STRIP_ADJACENCY,
           GL_TRIANGLES_ADJACENCY, and GL_PATCHES are accepted.

       id
           Specifies the name of a transform feedback object from which to
           retrieve a primitive count.

       instancecount
           Specifies the number of instances of the geometry to render.

DESCRIPTION
       glDrawTransformFeedbackInstanced draws multiple copies of a range of
       primitives of a type specified by mode using a count retrieved from the
       transform feedback stream specified by stream of the transform feedback
       object specified by id. Calling glDrawTransformFeedbackInstanced is
       equivalent to calling glDrawArraysInstanced() with mode and
       instancecount as specified, first set to zero, and count set to the
       number of vertices captured on vertex stream zero the last time
       transform feedback was active on the transform feedback object named by
       id.

       Calling glDrawTransformFeedbackInstanced is equivalent to calling
       glDrawTransformFeedbackStreamInstanced() with stream set to zero.

ERRORS
       GL_INVALID_ENUM is generated if mode is not an accepted value.

       GL_INVALID_VALUE is generated if id is not the name of a transform
       feedback object.

       GL_INVALID_VALUE is generated if stream is greater than or equal to the
       value of GL_MAX_VERTEX_STREAMS.

       GL_INVALID_OPERATION is generated if a non-zero buffer object name is
       bound to an enabled array and the buffer object's data store is
       currently mapped.

       GL_INVALID_OPERATION is generated if a geometry shader is active and
       mode is incompatible with the input primitive type of the geometry
       shader in the currently installed program object.

       GL_INVALID_OPERATION is generated if mode is GL_PATCHES and no
       tessellation control shader is active.

       GL_INVALID_OPERATION is generated if

       glEndTransformFeedback has never been called while the transform
       feedback object named by id was bound.

VERSION SUPPORT

       +---------------------------------+-----------------------------------------------------------------------+
       |                                 |                            OpenGL Version                             |
       +---------------------------------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+
       |Function / Feature Name          | 2.0 | 2.1 | 3.0 | 3.1 | 3.2 | 3.3 | 4.0 | 4.1 | 4.2 | 4.3 | 4.4 | 4.5 |
       +---------------------------------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+
       |glDrawTransformFeedbackInstanced |  -  |  -  |  -  |  -  |  -  |  -  |  -  |  -  | <?> | <?> | <?> | <?> |
       +---------------------------------+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+

SEE ALSO
       glDrawArrays(), glDrawArraysInstanced(), glDrawElements(),
       glDrawRangeElements(), glDrawTransformFeedback(),
       glDrawTransformFeedbackStreamInstanced().

COPYRIGHT
       Copyright (C) 2010-2014 Khronos Group. This material may be distributed
       subject to the terms and conditions set forth in the Open Publication
       License, v 1.0, 8 June 1999.  http://opencontent.org/openpub/.

COPYRIGHT
       Copyright (C) 2010-2014 Khronos Group.

[FIXME: source]                   05/21/2022          GLDRAWTRANSFORMFEEDB(3G)